Air-heater.



N11-.7005l9 f Y Patentednay'zo,|9029" A. H. LovEJoY. A

AIR HEATER.

(Applicfltion led Dec. 17, 1901,)

(no Modell) zshe'ets-sheet l'.

WITMESSES: v l/N VEN-Tof? l .yrlhwrfllar/oy Patented May 20, |902. yA. H. LDVEJOY.

No. mugsm.

AIB HEATER.

(Application-filed Dec. 1 7, 1901.)

(No Model.)

lil

W/ TIVE SSE S y AUrnfrE-:n STATES PATENT qmEE'ICE.

ARTHUR H. LovEaov, or GALLLA, NEW JERsEY.

y' AIR-HEATER.

SPECIFICATION forming part of Letters Patent'No. 700,519, dated May 20, 1902. Application filed December 17,1901; ASerial.I\Tor'.i86,208. v (No model.)

To @ZZ whom it may opneemt:

Be it known that I, ARTHUR I-I. LovEJov, a

citizen of the United States, and-a resident of Gallia, in the county of Somerset Aand State of New Jersey, have invented anew andlni-y proved Air-Heater, of which thefollowing is a Ifull, clear, and exactdescription. g

dust, and the like.

The invention consists of novel featu res an d i Vparts and combinations of the same, as will be fully described hereinafter and then. pointed out in the claims. e

A practical embodiment of the invention is represented in the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure l is a sectional side elevation ofthe improvement on the line l l of Fig. 2.

line 2 2 of Fig. 1,and Fig. Sis a reduced sido elevation of one of the heater air-tubes. Y

In the foundation A for the heater is built or arranged acold-air-supply chamber B, con'- nected with a fresh airinlet conduit C,` usually extending to the outside of the building, so that pure atmospheric air can pass into the chamber B. On the foundationA and over the chamber B is held a base-plate D, resting withfits'middle portion on a pillar B', arranged centrally ainthe chamber-QB. On this base-plate Dis arranged an ash-pit E, over which is located az nre-box F, containing suitable grate-bars Gr for the ashes to pass from the iire b`ox into the ash-pit E and for supplying the necessary air to insure proper combustion to the fuel in the fire-box; F. Airtubes H extend through the base-plate D into the air-supply chamber B, the said tubes eX- tending upwardly from the base-plateon the` outside of the ash-pitF. and fire-box F a suitable distance above the same to then bend in- Fig. 2 is a sectional plan view of the same on the" wardly and upwardly, as at H', until the opposite tubes meet each other, the tubes then "extending straight upward, as at H2, to connect'with tubes, pipes, channels h, or the like, each of which leads froml a single pipe 1H to anindividual room in the building. By

having-the tubes H provided with the inwardly and upwardly bent portions H' a combustion-chamber I is formed over the nre-box F,`it being understood that the air in its passage from thecha'mber B through the tubes H is'thoroughly heated by the heat emanating .from the burning fuel in the lire-box F. A

shell J, preferably of sheet metal, incloses the ytubes H above the fire-box F, thus forming for. admitting more or less air to the ash-pit and to the grate-bars G.

As' indicated in Figs. 1 and 2, the tubes H are 'set with their lower portion in a circle in the base-plate D; but this arrangement is not essential, as the tubes may be otherwise arranged, if desired.

From the foregoing it will be seen that when the heater is-in use and the fuel is burning in the'fire-box F, the heat emanating from the burning fuel intensely heats the tubes H, so that the air in the said tubes is heated and forced to rise to the individual rooms, a fresh supply of pure air always passing to the tubes from the supply-chamber B, connected by the conduit C with the outer air. By the arrangement described the air isconducted directly through the heater by the tubes H, so that there is absolutelyno' danger of'obnoxions gases from the fire-boXF and combustionchamber I mingling-,withthe air thus passing through the-'tubesH,a` nd consequently heated pure air is furnished to the rooms to be heated. It is expressly understood that each room to be heated is connected with one of the tubes H, so that each room has its own directsupply of heated air from-the chamber B.

Having thus described my invention,..I

IOO

claim as new and desire to secure by Letters Patent- 1. An air-heater, having a series of airtubes, each connected at one end with a coldair-supply chamber, and at the other end with a distributing-pipe for conducting the heated air to a room, the said air-tubes being arranged side by side and extending around the fire-box, and ash-pit and forming a comp bustion-chamber above the fire-box, as set forth.

2. An air-heater, having a series of airtubes, each connected at one end with a coldair-supply chamber, and at the other end with a distributing-pipe for conducting the heated air to a room, the ai r-tubes having their lower portions extending along the outside of the tire-box and ash-pit, and the upper portions bent inwardly into Contact with each other to form a drum or combustion-chamber above the fire-box and thence extended vertically, as set forth.

3. An air-heater, having a series of airtubes, each connected at one end with a coldair-supply chamber, and at the other end with a distributing-pipe for conducting the heated air to a room, the air-tubes having their lower portions extending along the outside of the fire-box and ash-pit, and the upper portions bent inwardly into contact with each other to form a drum or combustion-chamber above the fire-box and thence extended vertically, and a shell surrounding the air-tubes above the fire-box to form a heating-chamber between the shell and the outer sides of the upper bent portions of the air-tubes, as set forth.

4. An air-heater, having a series of airtubes, each connected at one end with a coldair-supply chamber, and at the other end with a distributing-pipe for conducting the heated air to a room, the air-tubes having their lower portions extending along the outside of the fire-box and ash-pit, and the upper portions bent inwardly into contact with each other to form a drum or combustion-chamber above s"fedele the iire-box,y a shell surrounding the air-tubes above the lire-box to form a heating-chamber between the shell and the outer sides of the upper bent portions of the air-tubes and through the top of which the upper ends of the air-tubes extend, and a smokeiiue leading from the combustion-chamber and extending through the said heatingchamber,as set forth.

5. An air-heater, comprisinga cold-air-supply chamber, a base-plate set over the said chamber, a fire-box and ash-pit on the said base-plate, and a series of air-tubes opening through the base-plate into the cold-air-supply chamber, the air-tubes extending upwardly along the outside of the ash-pit and yfire-box, to then extend inwardly and upwardly into contact with each other to form a combustion-chamber over the {ire-box and thence extended vertically, as set forth.

6. An air-heater, comprising a fire-box, an ash-pit below the fire-box, a series of air-tubes extending up along the outside of the ash-pit and fire-box and then bent inwardly into contact with each other above the fire-box to form a combustion-chamber above the same, the lower ends of the tubes being open for connection with a cold-air chamber and theirupper ends adapted to be cach connected with a distributing-pipe, a shell surrounding `the upper portion oi' the said tubes and forming a heating-chamber around the same and through the top of which the upper ends of the air-tubes extend, and a smoke-flue leading from the combustion-chamberand extending into the heating-chamber to the front ot' the same and thence out through the rear thereof, as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ARTHUR Il. LOVEJOY.

Witnesses:

THEO. G. Hos'rnn, EVERARD BOLTON B/IARsI-IALL. 

